/*
Problem Description
There must be many A + B problems in our HDOJ , now a new one is coming.
Give you two hexadecimal integers , your task is to calculate the sum of them,and print it in hexadecimal too.
Easy ? AC it !
Input
The input contains several test cases, please process to the end of the file.
Each case consists of two hexadecimal integers A and B in a line seperated by a blank.
The length of A and B is less than 15.
Output
For each test case,print the sum of A and B in hexadecimal in one line.
Sample Input
+A -A
+1A 12
1A -9
-1A -12
1A -AA
Sample Output
0
2C
11
-2C
-90
 */
package com.yuan.algorithms.training20150721;

import java.util.Scanner;

public class 十六进制的和 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		while(sc.hasNext()) {
			long a = sc.nextLong(16);
			long b = sc.nextLong(16);
			long sum = a+b;
			if (sum<0) {
				System.out.println("-"+Long.toHexString(-sum).toUpperCase());
			}else {
				System.out.println(Long.toHexString(sum).toUpperCase());
			}
		}
	}

}
